Inhibition Mechanism of the Substance Containing Aluminum on ASR

Xiao Yan Wang; Xiao Xin Feng; Cui Zhi Dong; Xin Rong Kan; Li Fang Zhang; Jie Han

doi:10.4028/www.scientific.net/AMR.287-290.895

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 287-290Inhibition Mechanism of the Substance Containing...

Inhibition Mechanism of the Substance Containing Aluminum on ASR

Abstract:

The influence of Al₂O₃ on alkali content in concrete pore solution was investigated, Al₂O₃ was added into concrete by bauxite. The quartz glass as active aggregate was dipped in the NaOH solution with Al³⁺ and without Al³⁺ respectively. The morphology of the products was observed by scanning electron microscope, the element composition was analyzed by Energy analyzer and the mineral composition was measured by X-ray diffractometer. The results showed that alkali content in pore solution can be reduced effectively by Al₂O₃. The more content of Al₂O₃, the lower alkali content in pore solution. The existence of Al³⁺ changed the ASR products. The products inclined to crystal rather than gel and zeolite was formed. Therefore, the decrease of alkali content in pore solution and transformation of ASR products were the reasons of the substance containing aluminum inhibition ASR.

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Periodical:

Advanced Materials Research (Volumes 287-290)

Pages:

895-898

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.287-290.895

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Online since:

July 2011

Authors:

Xiao Yan Wang, Xiao Xin Feng, Cui Zhi Dong, Xin Rong Kan, Li Fang Zhang, Jie Han

Keywords:

Alkali Content, Alumina, Inhibition Mechanism, Reaction Products

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References

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